package com.train.webadmin.app.service.impl;

import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.train.webadmin.app.service.*;
import com.train.webadmin.app.dao.*;
import com.train.webadmin.app.model.*;
import com.train.common.core.base.dao.BaseDaoMapper;
import com.train.common.core.object.TokenData;
import com.train.common.core.object.MyRelationParam;
import com.train.common.core.base.service.BaseService;
import com.github.pagehelper.Page;
import lombok.extern.slf4j.Slf4j;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.*;

/**
 * 项目成绩数据操作服务类。
 *
 * @author xulei
 * @date 2025-03-07
 */
@Slf4j
@Service("studentRegistrationService")
public class StudentRegistrationServiceImpl extends BaseService<StudentRegistration, Long> implements StudentRegistrationService {

    @Autowired
    private StudentRegistrationMapper studentRegistrationMapper;

    /**
     * 返回当前Service的主表Mapper对象。
     *
     * @return 主表Mapper对象。
     */
    @Override
    protected BaseDaoMapper<StudentRegistration> mapper() {
        return studentRegistrationMapper;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public StudentRegistration saveNew(StudentRegistration studentRegistration) {
        studentRegistrationMapper.insert(this.buildDefaultValue(studentRegistration));
        return studentRegistration;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void saveNewBatch(List<StudentRegistration> studentRegistrationList) {
        if (CollUtil.isNotEmpty(studentRegistrationList)) {
            studentRegistrationList.forEach(this::buildDefaultValue);
            studentRegistrationMapper.insertList(studentRegistrationList);
        }
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public boolean update(StudentRegistration studentRegistration, StudentRegistration originalStudentRegistration) {
        studentRegistration.setCreateUserId(originalStudentRegistration.getCreateUserId());
        studentRegistration.setUpdateUserId(TokenData.takeFromRequest().getUserId());
        studentRegistration.setCreateTime(originalStudentRegistration.getCreateTime());
        studentRegistration.setUpdateTime(new Date());
        // 这里重点提示，在执行主表数据更新之前，如果有哪些字段不支持修改操作，请用原有数据对象字段替换当前数据字段。
        UpdateWrapper<StudentRegistration> uw = this.createUpdateQueryForNullValue(studentRegistration, studentRegistration.getId());
        return studentRegistrationMapper.update(studentRegistration, uw) == 1;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public boolean remove(Long id) {
        return studentRegistrationMapper.deleteById(id) == 1;
    }

    @Override
    public List<StudentRegistration> getStudentRegistrationList(StudentRegistration filter, String orderBy) {
        return studentRegistrationMapper.getStudentRegistrationList(filter, orderBy);
    }

    @Override
    public List<StudentRegistration> getStudentRegistrationListWithRelation(StudentRegistration filter, String orderBy) {
        List<StudentRegistration> resultList = studentRegistrationMapper.getStudentRegistrationList(filter, orderBy);
        // 在缺省生成的代码中，如果查询结果resultList不是Page对象，说明没有分页，那么就很可能是数据导出接口调用了当前方法。
        // 为了避免一次性的大量数据关联，规避因此而造成的系统运行性能冲击，这里手动进行了分批次读取，开发者可按需修改该值。
        int batchSize = resultList instanceof Page ? 0 : 1000;
        this.buildRelationForDataList(resultList, MyRelationParam.normal(), batchSize);
        return resultList;
    }

    private StudentRegistration buildDefaultValue(StudentRegistration studentRegistration) {
        TokenData tokenData = TokenData.takeFromRequest();
        studentRegistration.setCreateUserId(tokenData.getUserId());
        studentRegistration.setUpdateUserId(tokenData.getUserId());
        Date now = new Date();
        studentRegistration.setCreateTime(now);
        studentRegistration.setUpdateTime(now);
        return studentRegistration;
    }
}
